CN106543965A

CN106543965A - A kind of ternary mixed refrigerant

Info

Publication number: CN106543965A
Application number: CN201610963729.8A
Authority: CN
Inventors: 祁影霞; 曹睿
Original assignee: University of Shanghai for Science and Technology
Current assignee: Sichuan Hehua Asset Management Co.,Ltd.
Priority date: 2016-10-27
Filing date: 2016-10-27
Publication date: 2017-03-29
Anticipated expiration: 2036-10-27
Also published as: CN106543965B

Abstract

The present invention provides a kind of ternary mixed refrigerant, and the cold-producing medium is by 1,1,1,2 tetrafluoroethane, propane, 1,1,1,2,3,3 HFC-236fa are constituted, and the mass percent of wherein each component is the 1 of 10～40%, 1,1,2 tetrafluoroethane, 40～70% propane and the 1,1,1 of 10～20%, 2,3,3 HFC-236fa；Its preparation method is that above-mentioned each component is carried out under liquid phase state physical mixed according to its corresponding mass percent.It is far smaller than R22 that the ODP values of the cold-producing medium of the present invention are zero, GWP, and with not damaging the ozone layer, the characteristics of greenhouse effect impact is little, environmental-protecting performance is good；The combustibility of cold-producing medium is substantially reduced, with good safety；Can directly charge and R22 is substituted in refrigeration system, it is not necessary to change the critical piece of system, alternative cost is little, and heat transfer property is higher than R22, the effect of cooling and warming is more preferable.

Description

A kind of ternary mixed refrigerant

Technical field

The invention belongs to refrigerant art, and in particular to a kind of ternary mixed refrigerant.

Background technology

Depletion of the ozone layer and global warming have increasingly caused the concern of people, in order to tackle this weather and ring The change in border, in September in 2007 the 19th time《Montreal Protocol》Determine to accelerate to eliminate hydrochlorofluorocarsolvent in conference of states parties Compound (HCFCs), it is stipulated that the date of the completely superseded HCFCs of developing country advances to the year two thousand thirty from original the year two thousand forty, and And completed to cut down the task of datum line level 10% before 2015, the year two thousand twenty will be cut down 35%, will cut down 67.5% within 2025, 2030～the year two thousand forty only allows 2.5% maintenance capacity.As HCFCs has higher ODP (ODP), so grinding The substitute materials and correlation technique for studying carefully HCFCs are extremely urgent, count according to China Association of Refrigeration ＆ Air-Conditioning Industry, consume total in HCFCs In volume, monochlorodifluoromethane (R22) accounts for 99%, it can be seen that the replacement working time of R22 is tight, task weight.

Current R22 substitutes main both at home and abroad are HFC (HFCs) and its mixture, including 1,1,1,2- tetrafluoro second Alkane (R134a), R410A, R407C etc., other are expected to also propane, fluoroethane, the CO for substituting R22₂With R1234yf etc..These In substitute, R134a, R410A and R407C etc. due to higher global warming potential (GWP), in current environmentally friendly main trend Under in the world be subject to more and more limit the use of pressure；Although propane and fluoroethane GWP value are low, inflammable and explosive, poor safety performance； CO₂As hypertonia is very restricted in use range, R1234yf has in the application of domestic and business air conditioner field Wait to discuss, and this several cold-producing medium directly can not charge to substitute R22, need to be replaced the parts such as original compressor Change, which adds the cost of replacement.

In the prior art, patent CN200810234574.X disclose it is a kind of by 80～89% propane and 11～20% Iso-butane composition carbon-hydrogen refrigerant；Patent US2008029733 is disclosed with pentafluoroethane, tetrafluoroethane and nytron The refrigerant mixture of the material compositions such as thing；Patent KR20050094148 disclose it is a kind of by 71～90% propane and 10～ The mix refrigerant of 29% 1,1- Difluoroethanes composition.In the mix refrigerant of these replacements R22, some GWP are higher, no Meet the requirement of environmental protection；What is had is inflammable and explosive, there is potential safety hazard；In the system that can not directly charge R22 having, it is substituted for This height, difficulty are big.

Also a series of mix refrigerants with dimethyl ether as solvent are substituting R22, patent CN200810238072.4 disclose by 45～52% pentafluoroethane, 45～52% 1,1,1,2- tetrafluoroethane and 3～6% Dimethyl ether composition mixture；A kind of ternary near-azeotrope refrigerant is disclosed in patent CN200810097, the cold-producing medium is served as reasons The ternary mixture of 1,1,2,2- tetrafluoroethane, three kinds of material compositions of dimethyl ether and propane；Patent US20060011884 is disclosed Pentafluoroethane containing at least 75%, 5～24% 1,1,1,2- tetrafluoroethane and 1～4% dimethyl ether mixture.With On in the mix refrigerant containing dimethyl ether, have with stronger combustibility, poor stability；It is having with R22 thermal technology property Difference is larger, it is impossible to directly charge, and alternative costs are high；Have in direct filling to substitute R 22, show that efficiency is low, pressure mistake It is high, there are corrosivity to caulking gum, be not the ideal substitute of R22.

The content of the invention

To solve the above problems, following technical scheme is present invention employs：

The present invention a kind of ternary mixed refrigerant, it is characterised in that by HFA 134a, propane, 1,1,1, 2,3,3- HFC-236fa are constituted, and the mass percent of wherein each component is as follows：1,1,1,2- tetrafluoroethane：10～40%, propane： 40～70%, 1,1,1,2,3,3- HFC-236fa：10～20%.

The present invention ternary mixed refrigerant a kind of as above preparation method, be by HFA 134a, Propane, 1,1,1,2,3,3- HFC-236fa carry out physical mixed under liquid phase state according to corresponding mass percent.

Invention effect and effect

A kind of ternary mixed refrigerant of replacement R22 of the invention, by 1 that mass percent is 10～40%, 1, 1,2- tetrafluoroethane (R134a), 40～70% propane (R290) and 10～20% 1,1,1,2,3,3- HFC-236fa (R236ea) constitute.The thermal parameter of each component of the present invention is close to R22, can directly charge and R22 is substituted in refrigeration system, The critical piece of system need not be changed, alternative cost is little, and heat transfer property is higher than R22, the effect of cooling and warming is more preferable；This The ODP of each component of invention be 0, GWP be less than R22, do not damage the ozone layer, greenhouse effect affect it is little, with the good feature of environmental protection Energy；As R134a and R236ea are fire retardants, the combustibility of the cold-producing medium being mixed with is substantially reduced, with peace well Quan Xing.

Specific embodiment

With reference to embodiments a kind of ternary mixed refrigerant of the present invention is further described.

【Embodiment one】

R134a, the R236ea of 70% R290 and 10% that mass percent is 20% are taken, and by these three components in liquid Cold-producing medium A is obtained after physical mixed is carried out under phase state.

【Embodiment two】

R134a, the R236ea of 60% R290 and 20% that mass percent is 20% are taken, and by these three components in liquid Cold-producing medium B is obtained after physical mixed is carried out under phase state.

【Embodiment three】

R134a, the R236ea of 50% R290 and 20% that mass percent is 30% are taken, by these three components in liquid phase Cold-producing medium C is obtained after physical mixed is carried out under state.

【Example IV】

R134a, the R236ea of 40% R290 and 20% that mass percent is 40% are taken, by these three components in liquid phase Cold-producing medium D is obtained after physical mixed is carried out under state.

In order to compare the cycle performance between the mix refrigerant under different ratio, R22, according to ARI Standard 520 The air conditioning condition of international standard：Evaporating temperature is 7.2 DEG C, and condensation temperature is 54.4 DEG C, and supercooling temperature is 8.3 DEG C, overtemperature Be 11.1 DEG C and compressor efficiency be 80%, theory is carried out to tetra- kinds of cold-producing mediums of A, B, C, D obtained in above example and R22 On cycle performance calculate and contrast, obtain table 1.

The cold-producing medium of 1 each embodiment of table, the cycle performance of R22 and comparison of environmental performance

Embodiment is acted on and effect

The present invention a kind of replacement R22 ternary mixed refrigerant, by the R134a that mass percent is 10～40%, 40 The R236ea compositions of～70% R290 and 10～20%, as it can be seen from table 1 the ODP of the cold-producing medium of present invention preparation is zero, GWP is far smaller than R22, and with not damaging the ozone layer, greenhouse effect is the characteristics of affect little, and environmental-protecting performance is good；Due to R134a and R236ea is fire retardant, and the combustibility of the cold-producing medium being mixed with is substantially reduced, with good safety；It is prepared by the present invention Thermal parameter and the R22 of cold-producing medium be close to, can directly charge and R22 is substituted in refrigeration system, it is not necessary to change the master of system Part is wanted, alternative cost is little, and heat transfer property is higher than R22, the effect of cooling and warming is more preferable.

Above example is only the basic explanation under present inventive concept, is not limited the invention.And according to the present invention Any equivalent transformation for being made of technical scheme, belong to protection scope of the present invention.

Claims

1. a kind of ternary mixed refrigerant, it is characterised in that：

By HFA 134a, propane, 1,1,1,2,3,3- HFC-236fa composition,

The mass percent of wherein each component is as follows：

1,1,1,2- tetrafluoroethane：10～40%,

Propane：40～70%,

1,1,1,2,3,3- HFC-236fa：10～20%.

2. a kind of preparation method of ternary mixed refrigerant as claimed in claim 1, it is characterised in that：

By 1,1,1,2- tetrafluoroethane, propane, 1,1,1,2,3,3- HFC-236fa according to corresponding mass percent in liquid phase shape Physical mixed is carried out under state.